Results 41 to 50 of about 1,487 (218)

The SPIDER CMB Polarimeter [PDF]

, 2012
SPIDER is a balloon-borne millimeter-wave telescope designed to study the polarization of the Cosmic Microwave Background (CMB). SPIDER will map 10% of the full sky with degree-scale beams to search for the distinctive inflationary gravitational wave ...
Trangsrud, Amy Ruth
core   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

The NIKA2 large-field-of-view millimetre continuum camera for the 30 m IRAM telescope [PDF]

, 2018
International audienceContext. Millimetre-wave continuum astronomy is today an indispensable tool for both general astrophysics studies (e.g. star formation, nearby galaxies) and cosmology (e.g.
Andrianasolo, A., F. Ruppin, Adam, R., Macías-Pérez, J.F., A. Adane, Monfardini, A., Bourrion, O., Evans, R., Beelen, A., J. Goupy, G. Pisano, Driessen, E. F. C., Leclercq, S., A. Beelen, M. Calvo, Bracco, A., Lestrade, J. -F., A. Monfardini, A. Benoît, Pascale, E., S. Triqueneaux, Bideaud, A., Driessen, E.F.C., R. Adam, Pisano, G., Ponthieu, N., G. Lagache, E. F. C. Driessen, F.-X. Désert, O. Bourrion, Benoît, A., A. Bideaud, A. Bracco, Comis, B., S. Leclercq, C. Romero, Ritacco, A., Schuster, K., S. Navarro, J.-F. Lestrade, Mayet, F., Adane, A., Billot, N., MacÍas-Pérez, J. F., G. Coiffard, R. Evans, H. Roussel, Lagache, G., J. F. Macías-Pérez, J.-P. Leggeri, E. Pascale, Leggeri, J.-P., Goupy, J., Ruppin, F., Triqueneaux, S., N. Billot, N. Ponthieu, Navarro, S., André, P., Lestrade, J.-F., Coiffard, G., Kramer, C., Tucker, C., Driessen, E.F. C., Désert, F.-X., Catalano, A., Revéret, V., Rigby, A., A. Andrianasolo, A. Rigby, Maury, A., Zylka, R., V. Revéret, Calvo, M., Sievers, A., C. Tucker, R. Zylka, B. Comis, de Petris, M., P. A. R. Ade, C. Kramer, Doyle, S., Roussel, H., F. Mayet, Romero, C., Ade, P. A. R., Aussel, H., Ade, P.A. R., Mauskopf, P., L. Perotto, Ade, P.A.R., H. Aussel, K. Schuster, A. Sievers, A. Maury, Leggeri, J. -P., A. Ritacco, A. Catalano, S. Doyle, Perotto, L., Désert, F. -X., P. Mauskopf, P. André, M. De Petris   +103 more
core   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Sources of straylight in the post-focus imaging instrumentation of the Swedish 1-m Solar Telescope

, 2012
Context. Recently measured straylight point spread functions (PSFs) in Hinode/SOT make granulation contrast in observed data and synthetic magnetohydrodynamic (MHD) data consistent.
Löfdahl, Mats G.,, Scharmer, Göran B.,, M. G. Löfdahl, G. B. Scharmer   +3 more
core   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta, Neivaldo Araújo de Castro, Marcos Alberto Rodrigues Vasconcelos, Airton Natanael Coelho Dias, Ludovic Ferrière, Wolf Uwe Reimold, Ana Maria Góes, Jackson Alves Martins, Liliana Sayuri Osako, Raimundo Mariano Gomes Castelo Branco   +9 more
wiley   +1 more source

Observational astrophysics

, 1995
Combining a critical account of observational methods (telescopes and instrumentation) with a lucid description of the Universe, including stars, galaxies and cosmology, Smith provides a comprehensive introduction to the whole of modern astrophysics ...
Smith, Robert C, Robert C Smith (7491836)   +1 more
core  

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Very high energy gamma ray astronomy and non pulsating low mass x-ray binaries [PDF]

, 1991
This thesis is concerned with non pulsating Low Mass X-Ray Binaries as Very High Energy γ-ray sources, in particular Scorpius X-1; the brightest of these objects in X-rays, and the most likely to be detectable at energies above 250 GeV.
Carraminana, Alberto, Carraminana, A
core  

The Sardinia Radio Telescope: From a technological project to a radio observatory [PDF]

, 2017
Context. The Sardinia Radio Telescope (SRT) is the new 64 m dish operated by the Italian National Institute for Astrophysics (INAF). Its active surface, comprised of 1008 separate aluminium panels supported by electromechanical actuators, will allow us ...
ZANICHELLI, Alessandra, A. Ridolfi, Orlati, A., SERRA, Giampaolo, Ridolfi, A., Concu, R., Fara, A., I. Prandoni, VACCA, VALENTINA, MIGONI, CARLO, Gaudiomonte, F., PISANU, MARIA TERESA, Massi, F., Zanichelli, A., A. Pellizzoni, Poppi, S., M. Pilia, Bolli, P., S. Casu, Stanghellini, C., STANGHELLINI, CARLO, GUIDETTI, DARIA, Pilia, M., COMORETTO, Giovanni, MELIS, Andrea, RIGHINI, SIMONA, Prandoni, I., MASSI, Fabrizio, D'AMICO, NICOLO', A. Orlati, V. Vacca, PORCEDDU, Ignazio Enrico Pietro, BARTOLINI, MARCO, Egron, E., S. Poppi, A. Trois, BOLLI, Pietro, C. Migoni, Trois, A., C. Tiburzi, Pisanu, T., EGRON, ELISE MARIE JEANNE, P. Castangia, Perrodin, D., M. N. Iacolina, A. Orfei, Govoni, F., TARCHI, ANDREA, GAUDIOMONTE, Francesco, N. D’Amico, TROIS, ALESSIO, Tiburzi, C., Loru, S., A. Zanichelli, Corongiu, A., Burgay, M., Guidetti, D., Righini, S., Iacolina, M., Bartolini, M., CASU, Silvia, CARRETTI, ETTORE, Melis, A., ORLATI, ANDREA, POPPI, Sergio, R. Ricci, T. Pisanu, M. Burgay, CONCU, Raimondo, M. Murgia, D. Guidetti, LORU, SARA, M. Bachetti, S. Righini, PELLIZZONI, ALBERTO PAOLO, Murgia, M., FARA, Antonietta Angela Rita, A. Melis, F. Gaudiomonte, PERRODIN, DELPHINE, MURGIA, MATTEO, BURGAY, MARTA, Tingay, S., A. Fara, F. Loi, G. Comoretto, Pellizzoni, A., Tarchi, A., Serra, G., F. Massi, R. Concu, Nasir, F. T., Porceddu, I., M. Bartolini, Iacolina, M. N., P. Bolli, BACHETTI, Matteo, Migoni, C., CORONGIU, ALESSANDRO, ORFEI, ALESSANDRO, PILIA, Maura, Castangia, P., F. T. Nasir, PISANU, Tonino, A. Corongiu, G. Valente, M. Buttu, Buttu, M., Vacca, V., Carretti, E., E. Carretti, PRANDONI, ISABELLA, GOVONI, FEDERICA, F. Govoni, Loi, F., E. Egron, C. Stanghellini, S. Loru, RIDOLFI, ALESSANDRO, Casu, S., D'Amico, N., Nasir, F., Comoretto, G., I. Porceddu, Tingay, Steven, RICCI, ROBERTO, D. Perrodin, BUTTU, Marco, A. Tarchi, S. Tingay, Valente, G., G. Serra, CASTANGIA, PAOLA, Ricci, R., TIBURZI, Caterina, Bachetti, M., Orfei, A.   +136 more
core   +1 more source